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## Copyright (C) 1998-2003 Joao Cardoso.
##
## This program is free software; you can redistribute it and/or modify it
## under the terms of the GNU General Public License as published by the
## Free Software Foundation; either version 2 of the License, or (at your
## option) any later version.
##
## This program is distributed in the hope that it will be useful, but
## WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
## General Public License for more details.
##
## This file is part of plplot_octave.
function p15
global pl_automatic_replot
t = pl_automatic_replot;
pl_automatic_replot = 0;
title "Lighted and shaded surface";
xlabel "";
ylabel "";
[x, y, z] = rosenbrock; z = log(z);
set_view(30, -60);
colormap(gray);
shading("flat");
surfl(x, y, z);
pause(1);
set_view(50, 40);
colormap(bgr);
shading("faceted");
surf(x, y, z);
colormap('default');
pl_automatic_replot = t;
endfunction
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